linux-kernel - [PATCH 9/9] xen/p2m/debugfs: Fix potential pointer exception.

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Message-Id: <1317325971-21603-10-git-send-email-konrad.wilk@oracle.com>
Date:	Thu, 29 Sep 2011 15:52:51 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	linux-kernel@...r.kernel.org
Cc:	Dan Carpenter <error27@...il.com>, xen-devel@...ts.xensource.com,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: [PATCH 9/9] xen/p2m/debugfs: Fix potential pointer exception.

We could be referencing the last + 1 element of level_name[]
array which would cause a pointer exception.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 arch/x86/xen/p2m.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 58efeb9..bc4cf0a 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -786,9 +786,9 @@ EXPORT_SYMBOL_GPL(m2p_find_override_pfn);
 int p2m_dump_show(struct seq_file *m, void *v)
 {
 	static const char * const level_name[] = { "top", "middle",
-						"entry", "abnormal" };
+						"entry", "abnormal", NULL};
 	static const char * const type_name[] = { "identity", "missing",
-						"pfn", "abnormal"};
+						"pfn", "abnormal", NULL};
 #define TYPE_IDENTITY 0
 #define TYPE_MISSING 1
 #define TYPE_PFN 2
-- 
1.7.4.1

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